74233Re: [PATCH] Subpixel rendering artifacts in GUI mode
- Nov 24, 2013Hi Bram,
2013/11/25 Mon 7:12:56 UTC+9 Bram Moolenaar wrote:
> Thomas Tuegel wrote:I think this patch fixes the following problem in the todo.txt:
> > I recently discovered a graphical glitch that occurs sometimes in GUI
> > mode. If the GUI is using subpixel rendering, characters may leave
> > artifacts in their neighbors' cells after being erased. I discovered
> > this in the GTK+2 frontend, but it could be a problem in any GUI,
> > though it's highly dependent on a system's subpixel rendering
> > configuration, the font used, and probably some other variables I
> > haven't even considered.
> > I am sending a patch which corrects the issue by redrawing the
> > characters immediately to the left or right of any updated character.
> > This is the approach already taken with bold characters, which have
> > the same problem. I merely extended the treatment of bold characters
> > to apply to any updated character whenever Vim is in GUI mode.
> Is there a reliable way to know if this is needed? Redrawing more for
> all GUIs seems overkill. e.g. on Windows it would not be needed, right?
> 7 Windows XP: When using "ClearType" for text smoothing, a column of yellowMaybe it is needed also for Windows.
> pixels remains when typing spaces in front of a "D" ('guifont' set to
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